Re: Re: compiling gcc 5.x from the scratch: issues

[Markus Trippelsdorf <markus@trippelsdorf.de>]

On 2015.09.10 at 05:36 +0000, Michael Mishourovsky wrote:
> Dear Sirs, following your suggestions I checked again  https://gcc.gnu.org/wiki/InstallingGCC.
> 
> Key point was here: https://gcc.gnu.org/install/download.html (last
> passage) "Likewise the GMP, MPFR and MPC libraries can be
> automatically built together with GCC. Unpack the GMP, MPFR and/or MPC
> source distributions in the directory containing the GCC sources and
> rename their directories to gmp, mpfr and mpc, respectively (or use
> symbolic links with the same name)."
> 
> Actually my assumption was that if I run download_prerequisites from
> /contrib, it will download everything and put it at right places; but
> actually it does not follow statement above (it does not create gmp,
> mpfr and mpc folder in main gcc package directory) So I did it
> manually and copied files there.

Well, https://gcc.gnu.org/wiki/InstallingGCC says:

»Alternatively, after extracting the GCC source archive, simply run the
./contrib/download_prerequisites script in the GCC source directory.«

The »in the GCC source directory« part is important. If you run it from
anywhere else it will not work.

-- 
Markus